Twisted string actuator

Pending Publication Date: 2022-02-17
CHUNG ANG UNIV IND ACADEMIC COOP FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent text describes a way to make an actuator that's smaller by using a twisted string actuator that allows for the string to be shorter and have a smaller radius. This design allows for a wider selection of reduction ratios, which means that the actuator can have a higher level of responsiveness. Additionally, an elastic member can help compensate for uneven string division and alleviate external impact. This allows for a more reliable and responsive actuator.

Problems solved by technology

However, this design concept has limitations in that, when the length of the string is increased, the volume of the actuator is increased, and when the radius of the string is reduced, only a limited design of an allowable load for a mechanical load is possible.

Method used

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Examples

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Embodiment Construction

[0027]The present invention may be modified with various changes and have various embodiments, and it is thus intended to illustrate and describe specific embodiments in the accompanying drawings in detail. However, it should be understood that the present invention is not limited to specific embodiments and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In description of the present invention, when it is determined that the detailed description of widely known related technologies may make the subject matter of the present invention unclear, the detailed description will be omitted.

[0028]Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another component.

[0029]Terms used in the present application are used only to describe specific embodiments and are not inte...

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Abstract

The present invention relates to a twisted string actuator. The present invention may comprise: a drive source; driving parts for receiving power from the driving source; driven parts installed in conjunction with the driving parts and receiving power; strings coupled to the ends of the driving parts and the driven parts so as to be twisted or untwisted, and a driving compensation part installed at the ends of the strings to compensate for uneven actuation of each of the strings.

Description

TECHNICAL FIELD[0001]The present invention relates to a twisted string actuator, and more particularly, to a twisted string actuator using a twisted string actuation mechanism.BACKGROUND ART[0002]Twisted string actuation (TSA), which replaces the existing gear, has actively been researched as a technology of safely driving a robot. The TSA is inherently safe because the TSA uses light and inexpensive strings and has flexibility, and many studies on the TSA are being conducted as a driving technology that can be used more safely than a motor in a machine in which humans and robots collaborate.[0003]The design concept of the existing twisted string actuator is generally to increase the length of the string or reduce the radius of the string in order to obtain a high reduction ratio. However, this design concept has limitations in that, when the length of the string is increased, the volume of the actuator is increased, and when the radius of the string is reduced, only a limited desig...

Claims

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Application Information

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IPC IPC(8): F16H37/12B25J9/10
CPCF16H37/124B25J9/104B25J9/102F16H19/0654B25J19/0091
Inventor SHIN, DONG JUNLEE, SEUNG RYEOL
Owner CHUNG ANG UNIV IND ACADEMIC COOP FOUND
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